More than 100 forest fires have been raging in the north of Portugal since last weekend. The regions of Aveiro, Porto and Viseu are particularly affected. Thousands of firefighters are battling a 13-kilometer-long fire front.

Firefighters tackling deadly wildfires in central and northern Portugal had doused the flames in the Aveiro district, one of the worst-hit, as of Thursday, and were focusing on eight large blazes still raging elsewhere.

More than 5,000 firefighters have been tackling the wildfires that Portuguese Prime Minister Luís Montenegro said are "raging across the country".